A.O. Smith TWI 35-130, TWI 45-190 service manual Wiring

Page 57

12.3 Legends	WIRING
	1	= brown
	2	= blue
	3	= green
	4	= black
	5	= white
	6	= red
	7	= orange
	8	= yellow
	9	= black/red
	10	= black/white

CLAMPING STRIP CONNECTIONS:

Earth

N Zero

L1 Phase

COMPONENTS:

A Electronic control

B Air pressure switch

C Hot surface igniter

D Temperature sensor / ECO

E Thermostat board

F Yellow LED

G Thermostat

H Red LED

JGreen LED

KGas control

LTransformer 120 VAC-24 VAC

MFan isolating relay

Z Transformer 230 VAC-120 VAC

P Fuse

O Double-pole main switch

R Fan

Instruction manual TWI 35-130 G/TWI 45-190 G

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Image 57

Contents 35-130 45-190 Your installer Page Page Copyright 2007 A.O. Smith Water Products Company Page Errors InstallationMaintenance Operation of the deviceWarranty certiﬁcate Table of contentWhat to do when you smell gas Regulations IntroductionAbout the device Target groups IntroductionChapter Target groups Description InstallationThis chapter contains the terms of warranty Warranty certiﬁcateIntroduction This chapter will cover in the given order Operation of the deviceOperation of the device Heating cycleSecurity of the device Introduction Air pressure switch Security of the water temperatureGas control 4 FanUnvented installation Vented installation3 T&P valve Packaging InstallationInstallation Working area Dimension Description TWI Dimensions of the deviceDescription Unit TWI Dimension Description TWIVented Hot water side Cold water sideCirculation piping Condensation drainageRequirements for ﬂue gas discharge material Air supply and ﬂue gas discharge IntroductionDevice types Concentric connections Device types DescriptionDevice Diameter Maximum length Maximum num Ber of 90 bends Practical example of concentric ﬂue gas discharge ExampleSubject Description SpeciﬁcationsDevice Diameter Maximum running length Parallel connectionsBend Practical example of parallel ﬂue gas discharge ExampleDevice with parallel ﬂue gas discharge material Preparation Electrical connectionConnector block Isolating transformer Check and adjust the CO2-value Connect the mains voltageGas control Checking procedureAdjust the CO2-value Conversion to another gas category Conversion to another gas category Unvented FillFill vented installations Fill the device Fill unvented installationsDrain Installations Drain unventedDrain vented Start up Opening the gas valve 3.5 Connections diagramStart up Introduction You can Shut downFor a short time Electrically isolateShut down Errors Introduction Distinction is made between General errorsErrors visible on the control Symptom Cause Solution Remark Gas smell Water leakageExplosive ignition Hot water Symptom Cause Solution Remark Insufﬁcient or noLight pulses Cause Solution Remark Troubleshooting table for errors visible on the controlSee 12.2 Electrical circuit diagram Light pulses Cause Solution Remark SL3TWI Introduction Prepare maintenance MaintenanceMaintenance 11.1 Warranty general Warranty certiﬁcate11.2 Warranty tank 11.3 Conditions 11.6 Claims Warranty certiﬁcate 11.7 Obligations SmithAnnex Annex Electrical circuit diagramWiring Annex Connect IndexIndex User WarrantyPage 0308 489 R1.0